a
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4
3
2
1
Outside the middle school program
/ Decimal numbers
12 exercises (100% corrected)
a
Values rounded up by default
(7 exercices)
Approximate and rounded values
(2 exercices)
Truncation
(1 exercice)
Graduated lines and multiplicative decomposition
(2 exercices)
1.
V
alues
r
ounde
d
up
by
default
E.1475
1
a
Cop
y
the
inequalit
y
b
elo
w
and
complete
appropri-
ately
to
obtain
a
frame
for
7.91
to
the
nearest
unit
:
:
:
:
:
:
:
<
7.91
<
:
:
:
:
:
:
b
Giv
e
the
appro
ximate
v
alue
b
y
excess
of
7.91
to
the
nearest
unit
2
a
Cop
y
and
complete
the
inequalit
y
to
obtain
the
fram-
ing
of
5.21
to
the
nearest
ten
th
:
:
:
:
:
:
:
<
5.21
<
:
:
:
:
:
:
b
Giv
e
the
default
appro
ximate
v
alue
of
5.21
to
the
near-
est
ten
th.
3
a
Cop
y
and
complete
the
inequalit
y
to
obtain
a
frame
for
14.526
to
the
nearest
h
undredth
:
:
:
:
:
:
:
<
14.526
<
:
:
:
:
:
:
b
Giv
e
the
default
appro
ximate
v
alue
of
14.526
to
the
nearest
h
undredth.
E.1494
1
a
Giv
e
a
framing
to
the
unit
of
3.241
b
Giv
e
a
frame
to
the
ten
th
of
7.59
c
Giv
e
a
frame
to
the
h
undredth
of
6.241
2
a
Giv
e
the
appro
ximate
v
alue
b
y
excess
of
3.241
to
the
nearest
unit.
b
Giv
e
the
default
appro
ximate
v
alue
of
7.59
to
the
near-
est
ten
th.
c
Giv
e
the
default
appro
ximate
v
alue
of
6.241
to
the
nearest
h
undredth.
E.3514
1
Giv
e
the
default
appro
ximate
v
alue
of
the
n
um
b
er
15.78
to
unit
y
.
2
Giv
e
the
excess
appro
ximate
v
alue
of
the
n
um
b
er
0.57
to
the
ten
th.
3
Giv
e
the
default
appro
ximate
v
alue
of
the
n
um
b
er
12.548
to
the
h
undredth.
E.6541
1
Giv
e
a
frame
to
the
nearest
h
undredth
of
the
n
um
b
er
:
A
=
13.496
2
a
Giv
e
the
default
appro
ximate
v
alue
to
the
nearest
ten
th
of
the
n
um
b
er
:
B
=
7.073
b
Giv
e
the
v
alue
approac
hed
b
y
excess
to
the
nearest
h
undredth
of
the
n
um
b
er
:
C
=
2.243
E.1586
1
Complete
the
left-hand
column
of
the
table
b
elo
w,
giving
the
requested
frames
to
the
nearest
ten
th.
2
Complete
the
t
w
o
columns
of
appro
ximate
v
alues.
V
aleurs
appro
c
hées
par
excès
V
aleurs
appro
c
hées
par
défaut
:
:
:
<
13.56
<
:
:
:
:
:
:
<
3.04
<
:
:
:
:
:
:
<
5.64
<
:
:
:
:
:
:
<
7.001
<
:
:
:
:
:
:
<
6.98
<
:
:
:
E.2090
1
Consider
t
w
o
n
um
b
ers
x
and
y
whose
default
appro
xi-
mate
v
alues
to
the
h
undredth
are
kno
wn
:
x
≈
5.72
;
y
≈
0.86
Giv
e
a
frame
to
the
nearest
ten
th
of
the
t
w
o
n
um
b
ers
x
and
y
.
2
Consider
t
w
o
non-in
teger
n
um
b
ers
x
and
y
whose
v
alues,
appro
ximated
in
excess
of
a
ten
th,
are
kno
wn
:
x
≈
0.4
;
y
≈
12.3
Giv
e
a
frame
to
the
nearest
ten
th
of
the
t
w
o
n
um
b
ers
x
and
y
.
3
Consider
t
w
o
n
um
b
ers
x
and
y
whose
appro
ximate
v
alues
rounded
to
the
h
undredth
are
kno
wn
:
x
≈
9.31
;
y
≈
4.78
Giv
e
a
square
to
the
nearest
t
w
o
h
undredths
of
the
t
w
o
n
um
b
ers
x
and
y
.
E.2398
1
a
Giv
e
a
frame
to
the
h
undredth
of
the
n
um
b
er
:
A
=
5.467
b
Giv
e
the
appro
ximate
excess
and
default
v
alue
of
the
n
um
b
er
A
to
the
nearest
h
undredth.
2
a
Giv
e
a
frame
to
the
thousandth
of
the
n
um
b
er
:
B
=
102.543
1
b
Giv
e
the
appro
ximate
excess
and
default
v
alue
of
the
n
um
b
er
B
to
the
nearest
thousandth.
2.
Appr
oximate
and
r
ounde
d
values
E.3447
Consider
the
n
um
b
er
A
=
3.6251
.
Com-
plete
the
table
:
V
alue
of
A
appro
c
hée
par
défaut
appro
c
hée
par
excès
appro
c
hée
par
rounded
T
o
the
ten
th
près
T
o
the
h
undredth
près
T
o
the
thousandth
près
h
ttps:/
/c
hingmath.fr
chapExoCorrec/1475
sacados/1475
chapExoCorrec/1494
sacados/1494
chapExoCorrec/3514
sacados/3514
chapExoCorrec/6541
sacados/6541
chapExoCorrec/1586
sacados/1586
chapExoCorrec/2090
sacados/2090
chapExoCorrec/2398
sacados/2398
chapExoCorrec/3447
sacados/3447
0
1
2
3
4
3,4
3,5
3,6
3,7
3,8
3,59
3,6
3,61
3,62
3,63
3,624
3,625
3,626
3,627
3,628
à l’unité
près
au dixième
près
au centième
près
au millième
près
Valeur approchée
par défaut
Valeur approchée
par excès
Valeur
arrondie
0,9
1,0
1,1
1,2
1,3
1,4
1,5
1,6
1,7
2,7
2,8
2,9
3
3,1
3,2
3,3
A
B
C
E.1478
Consider
the
n
um
b
er
A
=
3.6251
:
1
F
or
eac
h
of
the
questions
b
elo
w,
place
the
n
um
b
er
of
ab-
scissaS
A
on
the
prop
osed
graduated
line
:
a
b
c
d
2
Complete
the
table
b
elo
w
using
the
results
from
question
1
:
3.
T
runc
ation
E.5667
Complete
the
table
b
elo
w
:
By
the
unité
By
the
ten
th
Arrondi
T
roncature
Arrondi
T
roncature
34,
53
2.08
17.14
4.
Gr
aduate
d
lines
and
multiplic
ative
de
c
omp
osition
E.1468
1
Giv
e
the
decimal
decomp
ositions
of
the
follo
wing
decimal
n
um
b
ers
:
a
1.3
b
1.45
c
1.05
d
1.33
e
1.4
2
Place
the
follo
wing
fiv
e
p
oin
ts
on
the
graduated
line
b
e-
lo
w
:
A
(1.3)
;
B
(1.45)
;
C
(1.05)
;
D
(1.33)
;
E
(1.4)
3
Arrange
the
abscissae
of
these
p
oin
ts
in
descending
order.
E.3512
Consider
the
graduated
line
b
elo
w
:
1
Giv
e
the
abscissa
of
the
p
oin
ts
A
,
B
,
C
.
2
Consider
the
follo
wing
three
p
oin
ts
:
D
3+5
×
0.01
;
E
2.97
;
F
2+(7
×
0.1)+(6
×
0.01)
a
Giv
e
the
decimal
writing
of
the
abscissae
of
the
p
oin
ts
D
,
E
and
F
.
b
Place
these
three
p
oin
ts
on
the
graduated
line.
3
Arrange
the
abscissae
of
these
six
p
oin
ts
in
decreasing
order.
h
ttps:/
/c
hingmath.fr
chapExoCorrec/1478
sacados/1478
0
1
2
3
4
3,4
3,5
3,6
3,7
3,8
3,59
3,6
3,61
3,62
3,63
3,624
3,625
3,626
3,627
3,628
à l’unité
près
au dixième
près
au centième
près
au millième
près
Valeur approchée
par défaut
Valeur approchée
par excès
Valeur
arrondie
chapExoCorrec/5667
sacados/5667
chapExoCorrec/1468
sacados/1468
0,9
1,0
1,1
1,2
1,3
1,4
1,5
1,6
1,7
chapExoCorrec/3512
sacados/3512
2,7
2,8
2,9
3
3,1
3,2
3,3
A
B
C
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