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
66 + 10 = ______
46 + 10 = ______
59 − 10 = ______
1 × 10 = ______
28 + 20 = ______
80 + 20 = ______
85 + 20 = ______
8 × 10 = ______
15 + 20 = ______
6 × 10 = ______
60 − 10 = ______
86 − 10 = ______
58 − 10 = ______
41 − 10 = ______
58 + 20 = ______
11 + 20 = ______
19 + 10 = ______
80 − 10 = ______
16 + 20 = ______
33 + 20 = ______
