Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
51 − 10 = ______
14 + 20 = ______
75 + 10 = ______
8 × 10 = ______
3 × 10 = ______
25 + 10 = ______
21 + 20 = ______
56 + 10 = ______
53 − 10 = ______
11 + 20 = ______
17 + 20 = ______
13 + 20 = ______
34 − 10 = ______
74 − 10 = ______
25 + 20 = ______
16 + 20 = ______
52 + 10 = ______
85 − 10 = ______
78 − 10 = ______
40 + 10 = ______
