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 + 20 = ______
5 × 10 = ______
57 + 10 = ______
79 + 10 = ______
64 − 10 = ______
70 + 10 = ______
87 + 20 = ______
9 × 10 = ______
40 + 20 = ______
43 − 10 = ______
14 + 10 = ______
49 − 10 = ______
35 − 10 = ______
96 − 10 = ______
14 + 20 = ______
7 × 10 = ______
15 + 20 = ______
38 − 10 = ______
71 + 20 = ______
8 × 10 = ______
