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
3 × 10 = ______
56 + 20 = ______
4 × 10 = ______
83 − 10 = ______
15 + 20 = ______
5 × 10 = ______
85 − 10 = ______
9 × 10 = ______
35 + 20 = ______
75 − 10 = ______
70 + 20 = ______
36 − 10 = ______
71 + 20 = ______
70 + 10 = ______
81 + 20 = ______
21 − 10 = ______
49 − 10 = ______
8 × 10 = ______
51 + 20 = ______
80 + 20 = ______
