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
61 − 10 = ______
54 + 20 = ______
41 − 10 = ______
9 × 10 = ______
7 × 10 = ______
29 + 10 = ______
45 + 20 = ______
51 − 10 = ______
72 + 20 = ______
96 − 10 = ______
32 + 20 = ______
5 × 10 = ______
46 − 10 = ______
72 − 10 = ______
58 + 20 = ______
57 − 10 = ______
69 + 10 = ______
58 − 10 = ______
79 + 10 = ______
68 + 20 = ______
