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
30 − 10 = ______
54 + 20 = ______
74 + 20 = ______
89 + 20 = ______
9 × 10 = ______
8 × 10 = ______
66 + 10 = ______
52 + 20 = ______
73 + 20 = ______
77 − 10 = ______
28 − 10 = ______
35 − 10 = ______
24 − 10 = ______
11 + 20 = ______
4 × 10 = ______
3 × 10 = ______
40 − 10 = ______
92 − 10 = ______
55 + 20 = ______
11 + 10 = ______
