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
85 + 10 = ______
51 − 10 = ______
35 − 10 = ______
5 × 10 = ______
16 + 10 = ______
89 + 20 = ______
9 × 10 = ______
70 + 20 = ______
4 × 10 = ______
21 + 20 = ______
53 − 10 = ______
31 + 10 = ______
66 − 10 = ______
81 + 10 = ______
88 + 10 = ______
40 + 20 = ______
79 − 10 = ______
99 − 10 = ______
71 + 10 = ______
49 + 20 = ______
