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
33 − 10 = ______
67 − 10 = ______
41 + 10 = ______
27 + 20 = ______
1 × 10 = ______
63 − 10 = ______
20 + 20 = ______
4 × 10 = ______
54 + 10 = ______
8 × 10 = ______
46 + 20 = ______
7 × 10 = ______
6 × 10 = ______
51 + 20 = ______
45 − 10 = ______
88 + 10 = ______
27 − 10 = ______
39 + 20 = ______
70 + 10 = ______
44 − 10 = ______
