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
5 × 10 = ______
4 × 10 = ______
51 + 10 = ______
80 + 10 = ______
22 − 10 = ______
88 + 10 = ______
67 + 10 = ______
62 − 10 = ______
14 + 10 = ______
50 + 10 = ______
35 + 20 = ______
61 − 10 = ______
78 + 20 = ______
70 + 20 = ______
3 × 10 = ______
33 − 10 = ______
32 + 20 = ______
33 + 20 = ______
77 + 10 = ______
80 − 10 = ______
