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
67 + 20 = ______
4 × 10 = ______
29 + 10 = ______
9 × 10 = ______
6 × 10 = ______
92 − 10 = ______
70 − 10 = ______
16 + 10 = ______
84 + 10 = ______
79 − 10 = ______
7 × 10 = ______
12 + 10 = ______
71 + 20 = ______
1 × 10 = ______
62 + 20 = ______
19 + 10 = ______
75 − 10 = ______
56 − 10 = ______
26 − 10 = ______
50 + 20 = ______
