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
7 × 10 = ______
89 − 10 = ______
59 − 10 = ______
8 × 10 = ______
61 + 20 = ______
5 × 10 = ______
16 + 20 = ______
42 − 10 = ______
3 × 10 = ______
30 − 10 = ______
62 + 10 = ______
49 − 10 = ______
85 + 20 = ______
6 × 10 = ______
24 − 10 = ______
48 − 10 = ______
77 + 20 = ______
83 + 20 = ______
92 − 10 = ______
42 + 10 = ______
