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
78 + 10 = ______
89 − 10 = ______
15 + 20 = ______
1 × 10 = ______
96 − 10 = ______
51 + 10 = ______
91 − 10 = ______
40 − 10 = ______
2 × 10 = ______
19 + 20 = ______
33 + 20 = ______
70 − 10 = ______
76 − 10 = ______
9 × 10 = ______
32 + 20 = ______
24 − 10 = ______
41 + 20 = ______
55 + 20 = ______
63 + 20 = ______
71 + 20 = ______
